21114455013 has 12 divisors (see below), whose sum is σ = 30500477280. Its totient is φ = 14075463336.

The previous prime is 21114455003. The next prime is 21114455017. The reversal of 21114455013 is 31055441112.

21114455013 is a `hidden beast` number, since 2 + 1 + 114 + 45 + 501 + 3 = 666.

It is not a de Polignac number, because 21114455013 - 2¹⁶ = 21114389477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114455017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114898 + ... + 235436.

It is an arithmetic number, because the mean of its divisors is an integer number (2541706440).

Almost surely, 2^21114455013 is an apocalyptic number.

It is an amenable number.

21114455013 is a deficient number, since it is larger than the sum of its proper divisors (9386022267).

21114455013 is a wasteful number, since it uses less digits than its factorization.

21114455013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140008 (or 140005 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 21114455013 its reverse (31055441112), we get a palindrome (52169896125).

The spelling of 21114455013 in words is "twenty-one billion, one hundred fourteen million, four hundred fifty-five thousand, thirteen".